How does Waunakee's water compare to the national average?

The USA national average is 151 mg/L. Waunakee (≈ 120–179 mg/L) is 1 mg/L softer than average.

Waunakee Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

7.2

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

334 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

hard~120–179 mg/LHard · est.

0–60

mg/L

Soft

61–120

mg/L

Moderately Hard

121–180

mg/L

Hard

180+

mg/L

Very Hard

Appliance Damage Report

In Waunakee, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Waunakee	Soft Water City	Efficiency Loss
Kettle	6.8 yrs	8.5 yrs	-20%
Washing Machine	9.6 yrs	12 yrs	-20%
Water Heater	12 yrs	15 yrs	-20%

Regional Water Comparison

How Waunakee compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Waunakee, Wisconsin	≈ 120–179 mg/L	0 ppt	🟠 Hard	groundwater
Middleton, Wisconsin	≈ 120–179 mg/L	0 ppt	🟠 Hard	groundwater
Madison, Wisconsin	≈ 180+ mg/L	2 ppt	🔴 Very Hard	groundwater
Verona, Wisconsin	340.4 mg/L	10.1 ppt	🔴 Very Hard	groundwater
Fitchburg, Wisconsin	≈ 120–179 mg/L	0 ppt	🟠 Hard	groundwater

National Benchmark

How Waunakee compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Waunakee	≈ 120–179 mg/L	🟠 Moderate
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Waunakee's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 334 mg/LpH: 7.2

The Waunakee Waterworks utility provides water to the village of Waunakee, Wisconsin, serving a population of 12,308. Their sole water source is groundwater, drawn from five deep wells that reach between 420 and 752 feet into a sandstone aquifer. This system relies on local precipitation recharging the aquifer through overlying soils and rock layers, with no surface water or reservoirs utilized. Standard municipal treatment processes are in place to ensure the water meets state and federal safety standards.

The water originates from a deep sandstone aquifer within Dane County, Wisconsin. Precipitation naturally filters through soil and rock before reaching the sandstone formations. This geological setting, common in the Midwest, features limestone and mineral-rich strata. Over extended periods underground, minerals like calcium and magnesium dissolve from these rocks into the water, resulting in a characteristically hard supply. The absence of surface runoff influences further contributes to this mineral content.

Homeowners in Waunakee may notice scale buildup on pipes, heaters, and fixtures, which can decrease the efficiency and lifespan of appliances like water heaters and dishwashers. You might also find that soap doesn't lather as easily, requiring more product for cleaning. Laundry could feel a bit stiff after washing. Regular descaling of appliances and cleaning faucet aerators are good maintenance practices. Given the hardness, installing a water softener is often recommended to extend equipment life, improve cleaning results, and mitigate these common issues.

Geology & Source: Deep sandstone aquifer; limestone and mineral-rich strata impart hardness due to dissolved calcium and magnesium

Other Wisconsin Water Reports

Middleton

≈ 120–179 mg/L

🟠 Hard

Madison

≈ 180+ mg/L

🔴 Very Hard

Verona

340.4 mg/L

🔴 Very Hard

Fitchburg

≈ 120–179 mg/L

🟠 Hard

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Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.

All reports are reviewed by our team. Thank you for supporting data quality!

Frequently Asked Questions

Is Waunakee's water safe to drink?

Yes. Waunakee's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Waunakee?

At ≈ 120–179 mg/L (Hard), Waunakee's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 20%.

How does Waunakee compare to the USA average?

The USA national average is 151 mg/L. Waunakee (≈ 120–179 mg/L) is 1 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Waunakee is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

Water Hardness

Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.

Estimated

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

TDS — Total Dissolved Solids

Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.

Measured

PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances

EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.

Modelled

Lead

Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.

Calculated

Appliance Lifespan

Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.